Firearm



FIG. 1 is a top, front, left perspective view of a firearm showing our new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The uneven-length broken lines represent unclaimed boundaries of the claimed design. The even-length broken lines showing the remainder of the firearm are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a firearm, as shown and described. 